Stephen J. Schueler, M.D.

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Bacterial Pneumonia Pneumococcus Anatomy

To better understand streptococcus pneumonia, it helps to understand the anatomy of the lungs.

Inside the chest, the windpipe, or trachea, divides into two smaller tubes: the right bronchus and the left bronchus. The right bronchus enters the right lung and the left bronchus enters the left lung. The right bronchus and left bronchus branch into smaller and smaller tubes.

The smallest tubes, called bronchioles, end in tiny air sacs, called alveoli. Blood flows very close to the walls of the alveoli. Oxygen and carbon dioxide pass between the air and the bloodstream through the wall of the alveoli.

Anatomy examples:

  • The lung and airways
  • The bronchioles and alveoli
  • The lungs
  • Pulmonary vessels

Last Updated: Nov 4, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Bacterial Pneumonia Pneumococcus References
  1. Chetty K, Thomson AH. Management of community-acquired pneumonia in children. Paediatr Drugs. 2007;9(6):401-11. [18052410]
  2. Feldman C, Anderson R. Controversies in the treatment of pneumococcal community-acquired pneumonia. Future Microbiol. 2006 Oct;1:271-81. [17661640]
  3. Kumar P, McKean MC. Evidence based paediatrics: review of BTS guidelines for the management of community acquired pneumonia in children. J Infect. 2004 Feb;48(2):134-8. [14720488]
  4. Maestro B, Sanz JM. Novel approaches to fight Streptococcus pneumoniae. Recent Patents Anti-Infect Drug Disc. 2007 Nov;2(3):188-96. [18221176]
  5. Vila-Corcoles A. Advances in pneumococcal vaccines: what are the advantages for the elderly? Drugs Aging. 2007;24(10):791-800. [17896829]
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